Liquid-weighing machine



H. RAUCHFUSS LIQUID WEIGHING MACHINE Fidhan. 5,. 1924 April 28, 1925.

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Patented Apr. 28, 1925.

HERMAN RAUCHFUSS, OF ENGLEWOOD, 00EUR-ADO.

LIQUID-'WEIGHIN'G MACHINE.

Application filed January 5, i924. i Serial No, 684,533.

T0 all whom t 72mg/ concer/n Be it known that I, HERMAN RAUcHrUss, a citizen ot the United States, residing at Englewood, county ot Arapahoe, and State of Colorado, have inifented certain new .and .useful Improvements in Liquid-leighing Machines; and I do declare the following to va -full, clear,1and exact description ot the invention, such as will lenable others s'illed in the art to .vhich it appertains to make andr use the same, reference being had to the :accompanying drawings, Vand to y .the foliar-i eters oic reference marked thereon, which forni ra part of this specification.-

This invention relates to Weighing nr..-

l.chinos of the type employed in filling vcon` tainers with a predetermined amount of liquid. In the sale and distribution ot goods such as honey, syrup, lard, etc., it has been found `that the .niost satistactoqT -.vay in which vthey can be handled is fby packing the saine yin tin :cans orV pails. Then honey is the `article to be packed, the diliculty is otten- .times increased by the nfact that -ccinb honey is ii-rst placed in the can and the balance is made up o'fstrained honey.

.Although my device depends for its operation .on .the vveight ot the liquid introduced in lthe can, this does not prevent it 'from .being used in connection with material that is `sold by measure, as, tor example, by the gallon or fractions ci' gallons, as a certain volume will Weigh a certain amount.

I will describe my device and .explain its operation in connection with the packing ot lhoney for which purpose it was primarilj.7 invented, although it is evident that it may .be employed .as Well With `other liquid products.

My invention, briefly described, consists ofa valve .mechanism that is connect-ed to a storage tank. The device has a floatoperated valve, which controls the admission of liquid into it lin such a manner that Ythe hydrostatic head at the delivery port of thedevice is maintained constant, regard 'lessor1 ,the lliquid level in the supply tank. The 4delivery poit has a valve operatively related thereto. This valve is kacted upon by a Weight which tends to close the same. The Weight is lrestrained by a catch Which is released by weighing means 4Whenever the required Weight of material has been delivered to the container. `Since there is always some liquid in the 4air between Ithat .in .the can or pail and the lower end of the delivery port, it .is necessary to provide `iieans that will enable this, .as Well as .the

`pressure duc to the flowing liquid, .to be .ot the can, as Well as lfor other reasons, and

since the consistency and 'therefore the rate ci oiv of the liquid varies with its temperature, it -is necessary that the compensating 1 means shall be such that lit can -be `easilyl and .quickly adjusted Whenever the occasion requires. This has been provided for in my apparatus.

My invention and itsl mode of operation can be best understood when reference is .had to the accompanying dra-wing in which the lpreferred en'ibodiment thereotl is shown, and in which:

Fig. 1 is a side elevation of my device with portions thereof broken away to beitter disclose the construction;

Fig. 2 .is a vertical section through ,my valve; and

Fig. 3 is a detail on a somewhat larger scale.

The same reference numbers will be employed to designate the same parts throughout vthe severa-l vieavs.

Numeral l designa-tes the supply .tank which rest-s upon a support 2 and contains .the strained honey which it is desired to pack in containers fl. The container 4 rests on one pan of a common balance. On the opposite pan 6 I place Weights 7 equal to the Weight otl liquid that I desi-re to introduce into the container. Before the Weights '7 are .put in place, I balance the scales with the container resting on ,pan 5. For this purpose I employ the Weight Sand any small weights and articles 9 placed on pan G. yllor reasons which will be apparent, I secure to `pan a flat bar vlO. The tank l has a threaded opening ll near its bottom and to this my improved valve is secured. My valve as at present constructed, consists of a pipe l2 Whose inner end yis beveled as indicated at 13 so as to cooperate with the bev* eled edge la ot the poppet valve '15 Whose stein 16 extends through a vguide I7 andis pivotally connected at 1S tothe endo the vertical arm 19 of the bell crank lever which is pivoted at 20. 'Pivotally connected to the end ot the horizontal arm 2l is a vertically Y extending rod 22. To the outer end of pipe V vinto Vthe reservoir through the Y the up and; down movement-,of the float 26 and the Vbar 22 will reciprocate the valve 15,

fithereby closing and opening the entrance intoV pipe 12. To the opposite side of the yT, 23, I connect a pipe 28 and to the'end.A

ot'this lfsecure another .T 29. T 29 is secured, by its sideopening, to the end of the pipe-28 andv hasjthe'main body portion' arranged in a vertical direction. A short 'jiipef-SO' is threaded into the lower opening so'adjusted that' the of the vT. The lower 'end of pipe 30 has its edge beveled, as indicated at 31, sov as to cooperate .with the `correspondingly beveled edge ot the valve 32, the stem ot' which 'passesthro'ugh a guide 34 andhas its upper Vendthreadedly connectedV to a coupling 35, which is pivotally securedat 36 to the end a lever 37 Lever37 is nonrotatably secured to the shaft 38." To the upperend of the T, I secure a plug 39 .which is perforated for therecept-ion oit a thermometer 40. j Referring now to Fig. 2'it will be evident that i't''ithe vvalve '32 is closed, liquid from tank 1 will flow,V into the reservoi-r 24 and as it'V rises in therreservoir it :will raise Vthe float 26 until the valve '15 closes. 'If valve Y 32 is nowopened so as to 'permit liquid to `flow until valve opens, as the valves are rate of'flow of liquid past 'valve 15 is greater than that past valve 32, itis evident that thefloat will function .to Ymaintain valve 15 open only to the extent' required to maintain a supply equalA to ,that-which Hows out past valve32. ContheV outer endV of stant head of liquid 'is therefore Ymaintained in `the reservoir, regardless of the level of the liquid in the supply tank. 1 j Y H Referring now more particularly to F ig. 1', we find that a member 41 issecured to 'the shaft 38 and that a curved rod'42 is rigidly connected to the L Vmove the Y purpose of` maintaining the delivery port Vshatt- 38 `and this ha sa weight 43 adj ustably jclamped to it. The weighttends to rotate shaft 33 in a clockwise direction so as to arm 37 andthe valve 32 upwardly for theV purpose' :of closing Vthedelivery port, lwhich isV the-lo-werend of pipe 30. For' the open 1n opposition to the actionlof the weight. 43, 'I have provided the following mechanism 'A lever V44 Avispivotally mounted Vat 45' .its pivot 46 its left hand V lower end otthe rod 53 I l v 58,which consistsv or" a strapV 59 of'resili-V lapping. Y A tubular `62 areperforated :tor the t passes through the tubu- 1 per end of the rod 53.

scale pan.

and'is interconnected with member 41 by.V

means of a pin46 so thatV when member 41 moves clockwise, the lever 44 will move counter-clockwise. InVV order that lever 44 shall have only a limited movement about end is provided with a notch 46 that embraces the pivot 38. A second lever 47 is Vpivoted at 48 and yhas aY portion 49 projecting upwardly. This portion has a hook 50 which is adaptedto engage over the end of the lever V44, in the manner shown in the drawing, and serves to hold the same from turning. A spring V51 is secured to lever 44 Vand rests on an extension 52 of the leverv 47. Lever v47 extends to the right fora distance of several inches and is provided with an openfv 54 is a bar 55 through the ends of which 47. `Themd5-3 extends through an openingV in theje'xtre'me right Yend of Vthe leverV and is provided with a head 57. To the ent material with its ends60`v and 6l overmember 62 is secured to the base of the strap The ends 60 and reception of the Vrod 53 .which also lar memberV 62. The latter extends through a holev in the end of strap 10 are so adjusted that while the scale is unand the parts .i 100 Ving'for the receptionof thegrod 53. Y

tened to the supporting plate or bracket secure a clamp' balanced as when the container-is underj i weight, Vthen the baseportion ofthe strap 59 will rest Aon the upper surface of the flat barlO, In this position and with' the clam 58 properly adjusted, the head 57 willnotV rest on or come incontact with the upper .surface of the lever 47, but will have a position somewhat as shown in Fig 1. A lever 63 'isy pivoted at 64 Vandhas its up- V'per edge serrated. A weight 65 is supported upon the up?.- The resultantY of Vfrom lever 63 whose end rests the force exerted by the weight 65'is sup! ported `by rod 53 and transmit-ted tothe By varying the position of'V the weight on the jarm 63, the force eXerted'on the pan 5 can be varied and bythis Vmeans corrections can readily be made uid in the air at the time valve `for variations Vin density and other variable factors. W hen suficient liquid Vhas flowed into'the container 4 to cause the pan 5 to overcome the weightsinrpanV 6 and "move downwardly, the weight Vof rod Y 53, as well as. that'eXerted by weight 65,

willbe transferred'tol the end ofthe lever 47 and move the latter downwardly suiicient to release'the rod 44, thereby permit- Y tingrweight 43 to functionV and close valve 32,` The 'liquid willnow rise in the res-` for Y the liq- Y 32 is closed, d20

Leanne ervoir and :move the float 26 upwardly, thereby .closing valve 15. rThe rate at which ihe liquid flo-ws lpast the valve .32 depends upon Athe ile-vel :of the liquid yin v.the reservoir 24 fand this can easily 'be controlled by .the simple expedient of :rotating the fioat on the rod '22. A spreader 66 is secured to the stem 33 and serves to "divide 'the stream into two 'parts so as 'Xto iprevent air bubbles 'from fbeing Aentrained thereby.

'The operation `of vthe device is obvious from the labove description, but in order tto make the disclosure as ful-l and clear :as

' possible, the .following description of 'the operation will vbe given:

Tank l is filled to any height with the fluid -3 which is to be :packed in the lcans 4.' With valve 32 held in closed .position by the action ofthe weight 43, liquid will flow 4into the reservoir 2A vpast valve 15 until Ythe latter is moved to closed posit-ion by the kaction of the float 26. A pail or other suitable container is .placed upon scale pan .5 and its weight `compensated for, `as :above explained. Veights 7` lare then placed in sca-le pan 6 to vthe yvalue of the -c-ontents of Ythe can when filled. This will, of course, move pan 5 unwardly., thereby moving rod L53 upwardly, raising the lever 63. The lever 42 is now turned in a counter-clockwise direction until `the end of lever il is engaged by the hook 50. This opens valve 32 and liquid will flow into the container. When sufiicient weight has been deposited in the container to overbalance the weight in the pan 6, then pan 5 moves downwardly. This permits the weight and the weight of rod 53 to be transferred to the end of the lever 47, thereby releasing lever 44 and permitting weight 43' to fall and to close the valve 32. kWeight 65 can readily be adjusted so that a perfect balance is obtained.

Having now described my invention, what I claim as new is:

l. In a weighing machine for filling containers with a predetermined weight of liquid, in combination, a liquid supply tank, a valve mechanism connected thereto, a scale, a container supported by said scale, said valve mechanism having an opening located directly above said container, a valve member operatively associated with said valve mechanism for closing said opening, means tending to move said valve member towards closing position, means comprising a latch member for holding said valve member in open position, said latch member having an opening for the reception of a control rod (53), said control rod having y means for engaging the latch member and rendering said latch inoperative when the rod moves downwardly a predetermined distance, and means on the scale which cooperates with the rod and holds the latch :engaging means out vof contact with the latch until the weight of. liquid in 'the container .reaches a predetermined value and Jthen permits the :latch-.engaging aneans .to come into `contact with the ylatch member vand to be `supported entirely thereby for the purpose of releasing the latch and permitting the valve member to move to -closing position.

Iin a `Weighing machine for 'filling containers with a predetermined weight of iliquid, in combination, a liquid supply tank, a Vvalve mechanism connected thereto, a

scale, a container .supported by said scale,

said va'lve mechanism having an opening located vdirectly above said container, a yvalve member operatively .associated with said valve :mechanism for closing said opening, means tending to move said valve member Stewards closing position, means :com- .prisi-ng a latch member for holding said valve member in open position, said latch member having an opening for vthe recep- .tion ,of :a control rod (53), said control rod lhaving means for engaging the latch member and rendering said latch inoperative when the rod moves downwardly a predetermined distance, vmeans on .the scale which Acooperates with the rod and holds the latch until the weigh-t of liquid in the container reaches -a predetermined value and then permits the latch-engaging means to come into contact with the latch member and to be supported entirely thereby for the purpose of releasing the latch and permitting the valve member to move toclosing position, and an adjustable weight resting upon the upper end of the control rod while the valve is open.

3. In a weighing machine for filling containers with a predetermined weight of liquid, in combination, a supply tank, a scale, a container on the scale, valve-controlled mechanism for conveying liquid from the tank to the container, said mechanism having an exit opening directly above the container, a valve member for controlling the flow of liquid through said opening, means tending to move said valve member to closing position, means comprising a latch member for holding said valve member in open posit-ion, a valve member near the point where liquid enters the valve-controlled mechanism, a fioat chamber between said valve and said exit opening, a float in said chamber, means connecting said float to said last-named valve member for opening and closing the same in accordance with the level of the liquid in the float chamber, and means operatively associated with the scale and the latch member for moving the latter when the container has attained a predetermined weight, said last-named means being supported by the scale while the liquid is flowing into the container and by the latchimemlcer a-fterVV the latch has operated.` Y Y Y il. Ina device for delivering predetermined weights of liquids to a container, a supply tank, a container, ascale upon which said container rests, axvalvemeclianism secured .to thetank, said mechanism having a deliveryport V,located over the container, a

reservoir connected to said valve mechanism holding` said valve in open position, means comprising a trigger device operatively connected to tlie scale orrendering said holdingl device inoperative'when the portion'of the scale to which itis connected moves,

and means Vto; adjusting orthe amount of liquid lietween the container and the valveV at'the time Vthe latter'closes,

Y 5. In `a device `.for 'deliveringpredetermined weights of'liquids to a container, a

supplyY tank, a container, a scale upon which Y Vably connected to said lever. y Y

In testimonywliereo I alx my signature.

said container rests, a valve mechanism secured to the tank, said mechanism having a delivery poi-t located over the container, a reservoir connected to said valve Vmechanism between the delivery port and the tank,a float in said reservoir, a valve operativelyVY associated with the entrance tothe valve mechanism, means connecting said valve and float so that an upward movement of the latter moves Vthe valves towards' closing aosition, anda downward movement moves the valves towards `open position, asecond valve operatively associatedY with the delivery port, means tending to' move saidsecond valve towards closedn position, means fo-rf. holdingl said valve in open position, means comprising. a trigger device operatively connected to the scale foi-*rendering said lioldingvdevice iiniperative when the pormoves, 'and means for adjusting for the amount of .liquid Vbetween :the container andthe valve at the time the latter closes,

' said means comprising` -arod restingon the 50Y tion of the scale to which it is connected scale, a lever having one end pivotally con- Vnetted toV the valve-mechanism and theother end resting on the rod and aweight mov- HERMAN-nancnrnss; j 

